Standard sample for analyzing 82B wire rod sorbite content and preparation method thereof

Abstract

The invention relates to a standard sample for analyzing 82B wire rod sorbite content and a preparation method of the standard sample. The preparation method comprises the following steps: 1) ironmaking-refining in a converter-refining outside the furnace-adjusting chemical elements-continuously casting to obtain a blank, wherein the weight percentage of the chemical element is ensured to be within the range of the weight percentage of the elements in the standard sample during smelting; 2) heating casting blank, roughly rolling though a high-speed wire mill, intermediately rolling finely rolling, spinning and cooling under control of a Stelmor air cooling line; 3) sampling; and 4) cutting the base material of the standard sample into a plurality of small sections with length of 5 to 10mm; embedding into a metallographic specimen through embedding materials such as bakelite powder; carrying out polishing etching; and measuring the sorbite content; and then valuing; and finally packaging to obtain the standard sample. Such standard sample can be effectively applied to calibrating a quantitative measuring condition of the wire rod sorbite content through an instrument analyzing instrument, so that the accuracy in quantitative measuring of the sorbite content is effectively reduced, and the analyzing error is removed; and the measuring result has relatively high traceability and data reproducibility; and the preparation method is simple and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of metallurgical analysis, in particular to a standard sample for sorbite content analysis of 82B wire rod and a preparation method thereof. Background technique [0002] After the wire rod is hot-rolled, it mainly obtains a sorbite structure. The 82B sorbite wire rod for prestressed steel wire and steel strand rolled by a high-speed wire rod mill and a controlled cooling system has a significant effect on the performance of the wire rod. It is important to carry out quantitative analysis and detection of the sorbite content in the metallographic structure of the wire rod before the factory leaves the factory and the user uses it. There are many methods for evaluating the sorbite content of wire rods, such as manual metallographic method, image analyzer method, etc., and the most commonly used method is the standard map comparison and rating method. Among them, the manual metallographic method is rarely use...

AI Technical Summary

Problems solved by technology

Among them, the manual metallographic method is rarely used due to long analysis time and cumbersome operation; the image analyzer method is rarely used because many analysis conditions cannot be digitally specified and uniformly calibrated, the analysis error is large, and it does not have operability and other factors; standard atlas Comparative Rating Algorithm Cannot Do Quantitative Analysis

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